Cleaning And Disinfection Of The Unit; Cleaning And Disinfection Of The Rotor; Disinfection Of Aluminium-Rotors; Disinfection Of Pp-Rotors - Hermle Z 306 Service Manual

11.1.2 Cleaning and disinfection of the unit

1. Open the lid before you turn off the unit. Disconnect it from the power supply.
2. Open the rotor nut by turning the rotor key clockwise.
3. Remove the rotor
4. For cleaning and desinfection of the unit and the rotor chamber using the above mentioned
cleaner.
5. Clean all accessible areas of the device and its accessories, including the power cord with a
damp cloth.
6. Wash the rubber seals and rotor chamber thoroughly with water.
7. Rub the dry rubber seals with glycerol or talc to prevent these to becoming brittle. Other
components of the unit, e.g. the lid lock, motor shaft and rotor must not be greased.
8. Dry the motor shaft with a soft, dry and lint-free cloth.
9. Control the unit and accessories for damage.
Remove at least every six months adherent dust from the ventilation slots in the centrifuge by using
a brush.

11.1.3 Cleaning and disinfection of the rotor

1. Clean and disinfect the rotors, rotor lids and adapters with the above mentioned cleaner.
2. Use a bottle brush to clean and disinfect the rotor bores.
3. Rotoren, Rotordeckel und Adapter gründlich mit Wasser abspülen. Besonders die
Rotorbohrungen von Festwinkelrotoren beachten.
4. For drying of the rotors and accessories set them on a towel. Place the angle rotors with bores
down, to dry them to.
5. Dry the rotor cone with a soft, dry and lint-free cloth and look for damage. Do not grease the
rotor cone.
6. Place the dry motor onto the motor shaft.
7. Pull the rotor nut tight by using the rotor-key.

11.1.4 Disinfection of aluminium-rotors

In case of infectious material spilling into the centrifuge, the rotor and rotor chamber have to be
disinfected right after the run. Rotors may be autoclaved at a maximum temperature of 121°C.

11.1.5 Disinfection of PP-rotors

Autoclaving
The recommended time for autoclaving: 15 – 20 min at 121°C (1 bar)
Attention: The sterilization time of 20 min. must not be exceeded. Sterilization again and
again will cause reduction of the mechanical resistance of the plastic material
Before the autoclaving the PP-rotor and adapter must thoroughly be cleaned to avoid the burning in
of dirty residues.
You can disregard the consequences of some chemical residues to plastic materials at ambient
temperatures. But at the high temperatures of the autoclaving those residues may corrode and
destroy the plastic. The objects must be thoroughly washed up with distilled water after the cleaning
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MAINTENANCE
Service Manual Z 306 43